CVE-2026-71497

jsoup: Cleaner may expose markup with custom raw-text elements

MEDIUM 4.7

At a glance

Source: NVD
EPSS: EPSS 0.30 % · percentile 22 (2026-10-28)
State: PUBLISHED
Published: 2026-08-06 21:09 UTC
Updated: 2026-08-07 14:37 UTC
Assigner: GitHub_M
NVD status: Awaiting Analysis

Description

jsoup is a Java library for working with real-world HTML. From 1.14.3 until 1.23.1, jsoup's HTML parser could incorrectly handle a malformed tag name ending in a control character, causing the tag to acquire the parsing behavior of a different element. When a custom Safelist permits certain raw-text elements, this misparsing can cause content that should remain inert text to be emitted as active markup after serialization, potentially resulting in cross-site scripting. jsoup's built-in Safelists are not affected. This issue is fixed in version 1.23.1.

Weaknesses (CWE)

CWE-79 — Cross-site Scripting (XSS)

References

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 4.7	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N	GitHub_M
CVSS 3.1	MEDIUM 4.7	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N	NVD · security-advisories@github.com (Secondary)

Advisories

GHSA-pmhh-3w7g-xqp8 — jsoup: Cleaner may expose markup with custom raw-text elements

European references

ENISA EUVD · EUVD-2026-54153
GCVE · GCVE-0-2026-71497

CERT-FR advisories

CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
CERTFR-2026-AVI-1336 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr

Affected products

Product	Versions
jhy · jsoup	affected >= 1.14.3, < 1.23.1

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD